Drying house or kiln



(No Model.) 3 Sheets-Sheet 1.

W. A. ALLEN.

DRYING HOUSE 0R KILN. I

No. 270,359. w Patented Jan. 9,1883.

WITNESSES INVENTOR 7%Aflaw 7wM/// BY XX/MAM ll ATTORNEY S.

N PETERS. Phclmljlhogmphcr, Wauhlngion. m;

3 Sheets-Sheet 2 (No Model.)

W.- A. ALLEN.

DRYING HOUSE 0R KILN. No. 270,359. Patented Jan. 9, 1883.

WITNESSES X INVENTOR BY W A Jayme/w ATTORNEYS.

(No Model.) 3 Sheets-Sheet 3.

W. A. ALLEN.

DRYING HOUSE ON KILN. No. 270,359. Patented Jan. 9,1883.

- WITNESSES: WENTO BY ATTORNEYS.

N. PETERS. Pholo-U\hognpMr. Washington. D. c.

Usrren S ATES PATENT arise.

WILLIAM A. ALLEN, OF JERSEY CITY, NEW JERSEY.

DRYING HOUSE OR KILN.

SPECIFICATION forming part of Letters Patent No. 270,359, dated January9, 1883,

Application filed November 2, 1882. (X0 model.)

To all whom it may concern:

Be it known that I, WILLIAM A. ALLEN, of Jersey (Jity, in the county ofHudson and State of New Jersey, have invented a new and lmproved DryingHouse or Kiln,'of which the following is at'ull,clear, and exactdescription.

My improvements relate to kilns for drying kindling-wood material inmass, and particularly the slabs or refuse from saw-mill logs,

which, being thoroughly water-soaked when sawed from the log, requiresto be thoroughly dried by artificial heat in order to fit it for use.The great dit'ficulty experienced in this work with the kilns heretoforeemployed has been in getting rid of. the moist air 'or vapors driven olffrom the mass of material. This condenses rapidly, and unless means areprovided for keeping it in a heated and rarefied condition it is asource of great trouble and annoyance.

The object of myinvention is to obviate the dit'ficulties named and toinsure the proper working of the drying apparatus at all seasons of theyear, so that the material may be rapidly and effectually dried.

The invention consists in certain novel features ofconstructionandarrangement, as hereinafter described and claimed, whereby the objectsnamed are attained.

Reference is to be had to the accompanying drawings, forining part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a vertical longitudinal section of my improved drying houseor kiln on line 0000 of Fig. 2. Fig. 2 is a vertical transverse sectionof the same on line y y of Fig. 1. Fig. 3

I is a detail side view. Fig. 4 is a plan view of the conveyingapparatus. Fig. 5 is a face view.

the floor, in an inclined direction to the sides of the building nearthe roof, so as to form ahopper-shaped structure that extends the wholelength of the building. At their lower ends these inclined walls an aresupported upon frame-work b. Interior-1y of the walls a a are inclinedpartitions 0, extending from the supportingframe I) to the base of theframe that supports the raised roof B, so that there is agradually-widening space between these inner walls or sides, 0, and theouter walls, a. The walls 0, as shown most clearly in Figs. 5 and 6, areconstructed of boards attached a short distance apart upon inclinedstudi ling, so

as to give opportunity for the moist air to escape to the space betweenthe walls a 0.

Above the walls 0, within the raised roof B, are similar perforatedpartitions,d, extending to the upper roof of the building. At the bottomof the space inclosed by the walls 0 c is a heating-box, 6, extendingthe whole length of the kiln, and upon this box 6, and extending nearlyto the top of the side walls 0, are partitions ff, preferablyconstructed ofopen wirework material, so as to form an inclosed space atthe center of the kiln for the heated air to rise in. At the upper partof the building, within the space inclosed by the walls (1 cl, is themain steam-supply pipe g, extending horizontally thewhole length of theinclosed space. and from this pipe smaller steam-pipes hextendhorizontally back and forth through the space inclosed by the walls 0 (lto the bottom thereof, where these steam-pipes connect to a horizontaldischarge-pipe, t', that is within the box 6, this pipe t extending outthrough the side of the main building A and connecting with a verticalescape flue or chimney, 7;, at theside thereof. As shown most clearly inFig. 1, the pipes It are arranged in aseries at regular in tervalsapart, and the sections or lengths extend through the side walls orpartitions c c,

so as to enter the space between the wallsac.

From the upper side of the supply-pipe g a pipe, 1, extends to the spaceimmediately beneath the raised roof B, and this pipe is ex tended alongclosely beneath the roof at each side, theend passing out through theside ofthe building, as shown in Fig. 1. At the center of ICO At theupper partofthe building is an endless apron or belt, a, suspended fromhangers, and carried by pulleys 0 at its ends, as shown most clearly inFigs. 3 and 4, above a fixed platform, 1). An inclined elevator, q, atthe outside of the building terminates, near one end of the endless beltn, through an opening in the side of the building, and this elevator isprovided with buckets for bringing the material up and discharging thesame upon the apron for its distribution in the space inclosed by thewalls 0 (I.

At the side of the belt a isau arm, 0, which is pivoted at one end andextends over the belt. The object of this arm is to sweep theinaterialfrom the belt as it is moved along, and the arm is held inplace by a pin, 9", at the side of the su 'iporting-frame. By shiftingthe arm the material is thrown 0d at the place desired.

In operation the material supplied to the apron it falls into and fillsthe space between the walls a c and (Z d, and around the space inclosedby the screens ff. By the position and arrangement of the steam-pipes itthey extend through all parts of the mass of wood thns piled up, so thatthe heat is equally distributed throughout. Theperforated side walls 0give opportunity for escape of the air and vapors to the space at theside, so that they are free to ascend and enter the open space beneaththe raised roof B. allow the air and vapors to rise from the lowerportion of the mass and through the center thereof. In warm weather thevapors and moist air readily pass out at the chimney 0; but in coldweather it is necessary to prevent condensation of the vapors, whichwould rapidly take place in the space above the steam-pipes. The steam-pipes l are provided for that purpose, and as they act to keep thespace beneath the root" heated the vapors are prevented from becomingcondensed, and are kept in a rarefied condition, so that they willreadily escape by the chimney. The air contained within the box 6becomes highly heated by the steam-pipe passing through it, and thisheated air is utilized by means of a blower, t, placed at one end, whichdraws the air from the box 0, and discharges the same by a pipe, 11, tothe upper part of the space inclosed by the screens ff, so that anycondensation of the vapors rising in this space is thus prevented, and adraft of air created that is sufficient to carry the vapors upwardthrough the mass.

Exhauststeam is generally used for the The screens f f kiln, and inorder to insure equal draft and heat throughout the distributing pipesthe escape-pipe t is fitted with a lift-valve, s, at its discharge end.This,being suitably weighted, remains closed until the pressure ofsteanris sufficient to fill all the pipes.

By the construction and arrangement ofthc partitions and steam-pipes, asshown and described, a thorough expulsion of the moisture from the kilnor house is insured, and the rapid and effective drying of the materialcan be carried out in all weathers.

I do not limit myself to the exact arrangement as described, as it maybe varied more or less and still obtain the same effect.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. In drying houses or kilns, thecombination of the inner perforated walls, 0 c, forming a receptacle forthe material, and the outer closed walls, a, within the building A,provided with the raised root'B, sul'istantially as shown and described.

2. In drying-houses, the combination and arrangement, substantially asdescribed, of the steam-supply pipe 1 and the pipes h with theperforated walls 0 and outer walls, a, forming a receptacle for thereception or" the material and space for the escape of the vapors.

3. In drying-houses, the combination ot'the screens ffwith theperforated side walls 0 c and outer walls, a, substantially as shown anddescribed.

4. In drying-houses, the heating-box e, the blower t, and pipe a,combined with the screens ff and side walls 00 0, sub.-tantially as andfor the purposes set forth.

5. In drying-houses, the combination, with the inclosingwalls a a andperforated side walls 0 c. of the raised roof B, perforated side walls(I d, and escape flue or chimney 0, substantially as shown anddescribed.

6. The combination and arrangement of the endless apron n and thepivoted arm 4'. substantially as and for the purposes specified.

7. A drying house or kiln constructed with outer closed walls and innerperforated walls or partitions, and with steam-pipes extendingthroughout the space inclosed by the inner walls and into the spacebetween the inner and outer walls, substantially as shown and described.

\V-. A. ALLEN.

Witnesses EDw. M. CLARK, (J. SEDGWIOK.

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